/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.transforms;



import com.bff.gaia.unified.sdk.PipelineRunner;

import com.bff.gaia.unified.sdk.annotations.Internal;



/**

 * <b><i>For internal use only; no backwards-compatibility guarantees.</i></b>

 *

 * <p>How a view should be physically materialized by a {@link PipelineRunner}.

 *

 * <p>A {@link PipelineRunner} will support some set of materializations, and will reject {@link

 * ViewFn ViewFns} that require materializations it does not support. See {@link Materializations}

 * for known implementations.

 */

@Internal

public interface Materialization<T> {

  /**

   * Gets the URN describing this {@link Materialization}. This is a stable, SDK-independent URN

   * understood by a {@link PipelineRunner}.

   */

  String getUrn();

}